21068803 has 8 divisors (see below), whose sum is σ = 24369408. Its totient is φ = 17840904.

The previous prime is 21068741. The next prime is 21068807. The reversal of 21068803 is 30886012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21068803 - 2⁹ = 21068291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21068807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17551 + ... + 18712.

It is an arithmetic number, because the mean of its divisors is an integer number (3046176).

Almost surely, 2^21068803 is an apocalyptic number.

21068803 is a deficient number, since it is larger than the sum of its proper divisors (3300605).

21068803 is an equidigital number, since it uses as much as digits as its factorization.

21068803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36353.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 21068803 is about 4590.0765788819. The cubic root of 21068803 is about 276.1933943518.

The spelling of 21068803 in words is "twenty-one million, sixty-eight thousand, eight hundred three".